JP2023160132A - Armature and rotary electric machine - Google Patents

Abstract

To prevent wear of a portion of winding led out from a coil.SOLUTION: A stator 14 comprises: a stator core 20; a plurality of coils 26; a second terminal 30 having a caulking part 66; a first lead-out wire 78; and a second lead-out wire 80. The first lead-out wire 78 is formed of a part of winding forming a specific coil 26(U1) of the plurality of coils 26, and has a second portion 70 routed from the specific coil 26(U1) to a side of the caulking part 66 and connected to the caulking part 66. The first lead-out wire 78 is formed of a part of winding forming the specific coil 26(U1), and is routed from the specific coil 26(U1) to the opposite side of the first lead-out wire 78 to be connected to another coil 26.SELECTED DRAWING: Figure 10

Description

The present disclosure relates to an armature and a rotating electric machine.

Patent Document 1 listed below discloses a stator that is an armature that constitutes a part of a rotating electrical machine. The stator described in this document includes a U-phase coil, a V-phase coil, and a W-phase coil formed by windings. These coils extend in the circumferential direction of the stator core and have connecting portions to which the U-phase conductive member, the V-phase conductive member, and the W-phase conductive member are connected. Each conductive member includes a hook that clamps the connection portion from the radial direction of the stator core. With this configuration, it is not necessary to extend the coil ends from each coil so as to extend in the axial direction of the stator core, and it is possible to downsize the stator in the axial direction.

JP 2021-151093 Publication

By the way, when the parts of the winding forming a coil that are drawn out from the coil come into contact with each other, the winding may be worn out at the contact part, but the configuration described in Patent Document 1 mentioned above solves this problem. Not considered.

The present disclosure takes the above facts into consideration and aims to provide an armature and a rotating electric machine that can suppress wear of the portion of the winding that is drawn out from the coil.

The armature (14) that solves the above problem includes an annular portion (32) formed in an annular shape, and a plurality of armatures that protrude from the annular portion toward one side in the radial direction and are arranged at intervals in the circumferential direction. an armature core (20) having teeth portions (34), and a plurality of coils (26) formed by winding conductive windings (24) around the plurality of teeth portions, respectively. ), a terminal (28, 30) formed using a conductive member and having a locking part (66) disposed between a pair of circumferentially adjacent teeth parts; A wire connection portion (70 ) and a part of the winding forming the specific coil, and is routed from the specific coil to the opposite side from the first leader wire. , and a second lead wire (80) connecting between the other coils.
Further, the armature (14) that solves the above problem includes an annular portion (32) formed in an annular shape, and the armature (14) that protrudes from the annular portion toward one side in the radial direction and is arranged at intervals in the circumferential direction. an armature core (20) having a plurality of teeth portions (34); and a plurality of coils (26) formed by winding conductive windings around the plurality of teeth portions. a terminal (28, 30) formed using a conductive member and having a locking part (66) disposed between a pair of circumferentially adjacent teeth parts; A connection part (70) that is formed by a part of the winding that forms a specific coil among the coils, is routed from the specific coil toward the locking part, and is connected to the locking part. and a part of the winding that forms the specific coil, and is routed from the specific coil to the first leader wire side, and is connected to the other a second lead wire (80) connecting between the coils; and at least one of the first lead wire and the second lead wire, which is formed using an insulating member and is attached to the armature core. an insulator (22) having a lead wire contact portion (86) that maintains a state in which the first lead wire and the second lead wire are separated by contact with each other.
Further, a rotating electric machine (10) that solves the above problem is arranged such that one of a stator (14) and a rotor (12) including the armature is arranged radially opposite to the armature. The other of the stator and the rotor has a magnet (18).

With this configuration, it is possible to suppress wear of the portion of the winding that is drawn out from the coil.

FIG. 2 is a schematic diagram of the motor of the first embodiment viewed from the axial direction. It is a perspective view showing a stator. FIG. 3 is a plan view showing the stator. FIG. 3 is an enlarged plan view showing an enlarged portion of the stator where the first terminal is provided. FIG. 3 is an enlarged side view of a portion of the stator where the first terminal is provided, viewed from the inside in the radial direction. FIG. 3 is a perspective view showing the first terminal. 7 is a perspective view of the first terminal viewed from a different direction from FIG. 6. FIG. FIG. 3 is a perspective view showing the second terminal. FIG. 3 is a side view of the second terminal viewed from the inside in the radial direction. FIG. 3 is an enlarged perspective view showing a part of the stator in an enlarged manner. 11 is a schematic diagram schematically showing a part of the stator shown in FIG. 10. FIG. It is a schematic diagram which shows typically a part of stator of the motor of 2nd Embodiment. It is a schematic diagram which shows typically a part of stator of the motor of 3rd Embodiment. It is a schematic diagram which shows typically a part of stator of the motor of 4th Embodiment. It is an enlarged perspective view which expands and shows a part of stator of the motor of 4th Embodiment.

A motor 10 according to a first embodiment of the present disclosure will be described using FIGS. 1 to 11. Note that arrow Z direction, arrow R direction, and arrow C direction appropriately shown in the drawings indicate one side in the rotational axis direction, the outer side in the rotational radial direction, and one side in the rotational circumferential direction of the rotor 12, which will be described later. The one axial side and the other axial side are directions defined for the purpose of explanation, and the one axial side can also be the other axial side. Further, the one circumferential side and the other circumferential side are directions defined for the purpose of explanation, and the one circumferential side can also be the other circumferential side. In addition, hereinafter, when simply referring to an axial direction, a radial direction, and a circumferential direction, unless otherwise specified, the rotational axis direction, rotational radial direction, and rotational circumferential direction of the rotor 12 are meant. Further, the motor 10 of this embodiment and the motors of each embodiment described later are examples of rotating electric machines.

As shown in FIG. 1, the motor 10 of this embodiment is an inner rotor type brushless motor. This motor 10 includes a stator 14 serving as an armature and a stator, and a rotor 12 serving as a rotor disposed inside the stator 14 in the radial direction.

The rotor 12 includes a rotor core 16 fixed to a rotating shaft (not shown) and a magnet 18 fixed to a radially outer surface of the rotor core 16. The magnet 18 is, for example, a ring magnet formed in an annular shape. In this magnet 18, portions having a north pole on the outside in the radial direction and portions having the south pole on the outside in the radial direction are alternately arranged along the circumferential direction. Note that a plurality of magnets 18 may be fixed to the radially outer surface of the rotor core 16. In this configuration, the magnets 18 having a north pole on the outside in the radial direction and the magnets 18 having the south pole on the outside in the radial direction are alternately arranged along the circumferential direction.

As shown in FIG. 2, the stator 14 is formed by a stator core 20 as an armature core, an insulator 22 attached to the stator core 20, and a conductive winding 24 wound around the stator core 20. A plurality of coils 26 are provided. Further, as shown in FIGS. 2 and 3, the stator 14 includes three first terminals 28 as terminals to which the end portions of the coil 26 are connected, and one second terminal 30 as a terminal.

The stator core 20 is a laminated core formed by laminating core constituent plates in the axial direction, which are formed by punching a steel sheet, which is a soft magnetic material, into a predetermined shape. This stator core 20 includes an annular portion 32 formed in an annular shape and a plurality of teeth portions 34 protruding radially inward from the annular portion 32. As shown in FIG. 3, in this embodiment, 15 teeth portions 34 are arranged at equal intervals along the circumferential direction.

As shown in FIGS. 2 and 3, the insulator 22 is formed using a resin material that is an insulating material. This insulator 22 includes an annular covering portion 36 disposed along the radially inner surface of the annular portion 32 of the stator core 20 .

The insulator 22 also includes a plurality of teeth covering portions 38 extending radially inward from the annular covering portion 36. The number of teeth covering portions 38 matches the number of teeth portions 34 of stator core 20. Each tooth covering portion 38 covers a portion of each tooth portion 34 where a coil 26, which will be described later, is formed.

The insulator 22 also includes a flange portion 40 that protrudes from the radially inner end of the tooth covering portion 38 in the axial direction and in the opposite direction to the teeth portion 34 . A coil 26, which will be described later, is arranged around the tooth covering portion 38 and between the collar portion 40 and the annular covering portion 36. Note that the insulator 22 of this embodiment has a structure that is divided into two parts in the axial direction.

Further, as shown in FIG. 3, the insulator 22 includes three first terminal support parts 42 on which three first terminals 28, which will be described later, are supported. The three first terminal support parts 42 are arranged along one end surface of the annular part 32 of the stator core 20 in the axial direction. An end portion of the first terminal support portion 42 on one side in the circumferential direction is arranged at the same position in the circumferential direction as the tooth portion 34 arranged on one side in the circumferential direction among a pair of circumferentially adjacent teeth portions 34. . Further, the end portion of the first terminal support portion 42 on the other side in the circumferential direction is arranged at the same position in the circumferential direction as the tooth portion 34 arranged on the other side in the circumferential direction among the pair of circumferentially adjacent teeth portions 34. ing. Furthermore, the circumferential center portion of the first terminal support portion 42 is disposed at a circumferential position corresponding to between the pair of circumferentially adjacent teeth portions 34 . In this embodiment, the three first terminal support parts 42 are arranged side by side along the circumferential direction at positions corresponding to the four circumferentially adjacent teeth parts 34. Furthermore, a first terminal fitting portion 44 as a terminal fitting portion is formed in each of the three first terminal support portions 42 . The first terminal fitting portion 44 is formed in a concave shape with one axial side open.

The insulator 22 also includes a second terminal support portion 46 on which a second terminal 30 (described later) is supported. The second terminal support portion 46 is arranged along one end surface of the annular portion 32 of the stator core 20 in the axial direction. In this embodiment, the second terminal support portion 46 is provided over a range corresponding to the four teeth portions 34 adjacent to each other in the circumferential direction. Further, the second terminal support section 46 is disposed on one side in the circumferential direction with respect to the first terminal support section 42 disposed closest to one side in the circumferential direction among the three first terminal support sections 42 . Further, the second terminal support section 46 is disposed adjacent to the first terminal support section 42 in the circumferential direction, which is the first terminal support section 42 disposed closest to one side in the circumferential direction among the three first terminal support sections 42 . Further, the second terminal support portion 46 is formed with a second terminal fitting portion 48 as a terminal fitting portion. The second terminal fitting portion 48 is formed in a concave shape with one axial side open. Note that the detailed configuration of the second terminal fitting portion 48 will be described in detail later.

The coil 26 is formed by winding a wire 24 such as a copper wire around the teeth 34 of the stator core 20 with an insulator 22 interposed therebetween. In the present embodiment, five coils 26 forming a U phase, five coils 26 forming a V phase, and five coils 26 forming a W phase are formed around a defined tooth portion 34, respectively. . The U-phase coil 26, the V-phase coil 26, and the W-phase coil 26 are arranged in this order along the circumferential direction. Furthermore, the five coils 26 forming the U phase, the five coils 26 forming the V phase, and the five coils 26 forming the W phase are each connected in series. Further, the five coils 26 forming the U phase, the five coils 26 forming the V phase, and the five coils 26 forming the W phase are connected in a star connection.

Here, one end of the winding 24 forming the five U-phase coils 26 will be referred to as a U-phase first terminal 50A as the terminal of the coil 26. Further, the other end of the winding 24 forming the five U-phase coils 26 will be referred to as a U-phase second terminal 50B as the terminal of the coil 26.

Further, one end of the winding 24 forming the five V-phase coils 26 will be referred to as a V-phase first terminal 50A as a terminal of the coil 26. Further, the other end of the winding 24 forming the five V-phase coils 26 will be referred to as a V-phase second terminal 50B as the terminal of the coil 26.

Further, one end of the winding 24 forming the five W-phase coils 26 will be referred to as a W-phase first terminal 50A as a terminal of the coil 26. Further, the other end of the winding 24 forming the five W-phase coils 26 will be referred to as a W-phase second terminal 50B as the terminal of the coil 26.

As shown in FIGS. 3, 4 and 5, the U phase first terminal section 50A, the V phase first terminal section 50A, and the W phase first terminal section 50A are connected to the three first terminals 28. are connected to each. Further, the U-phase second terminal section 50B, the V-phase second terminal section 50B, and the W-phase second terminal section 50B are connected to the second terminal 30.

As shown in FIGS. 6 and 7, the first terminal 28 is formed by pressing a copper plate, which is a conductive member. The first terminal 28 includes a first insulator fixing part 52 as an insulator fixing part formed in a rectangular plate shape whose thickness direction is the radial direction. The first terminal 28 also includes a caulking piece 54 extending radially inward from the other end in the axial direction at the circumferential center of the first insulator fixing portion 52 .

The first insulator fixing part 52 includes a base plate part 56 formed in a rectangular shape with the circumferential direction as the longitudinal direction and the axial direction as the lateral direction when viewed from the radial direction. The first insulator fixing portion 52 also includes a plurality of (in this embodiment, two) press-fit fittings that protrude toward one side in the circumferential direction from a portion on the other side in the axial direction at one end in the circumferential direction of the base plate portion 56. 58. The first insulator fixing portion 52 also includes a plurality of (in this embodiment, two) press-fit fittings that protrude toward the other side in the circumferential direction from a portion on the other side in the axial direction at the other end in the circumferential direction of the base plate portion 56. 58. The shape of the plurality of press-fitting portions 58 when viewed from the radial direction is a sawtooth shape. Further, the first insulator fixing portion 52 includes looseness reducing protrusions 60 that protrude radially inward from portions on the other axial side of both ends of the substrate portion 56 in the circumferential direction.

The caulking piece 54 includes a base plate portion 62 formed in a rectangular shape with the radial direction as the longitudinal direction and the circumferential direction as the short direction when viewed from the axial direction. Further, the caulking piece 54 extends from one end in the circumferential direction at the radially inner end of the base plate part 62 to one side in the circumferential direction, and has an end opposite to the base part 62 on the other side in the circumferential direction. It has an extending portion 64 that is folded back. The extending portion 64 and the distal end portion of the base plate portion 62 constitute a caulking portion 66 as a locking portion whose other side in the circumferential direction is open. As shown in FIGS. 4 and 5, the aforementioned first terminal section 50A is held between the caulking sections 66, so that the first terminal section 50A is connected to the caulking section 66.

As shown in FIG. 4, the first insulator fixing portion 52 of the first terminal 28 is inserted into the first terminal fitting portion 44 of the insulator 22. As shown in FIG. Thereby, the first insulator fixing part 52 is fixed to the insulator 22, and the first terminal 28 is supported by the insulator 22. Furthermore, when the first insulator fixing part 52 is inserted into the first terminal fitting part 44 , the plurality of press-fitting parts 58 of the first insulator fixing part 52 are press-fitted into the inner wall of the first terminal fitting part 44 . are mated. Thereby, the state in which the first insulator fixing part 52 is fixed to the insulator 22 is maintained. Here, as shown in FIG. 4, FIG. 6, and FIG. The portion 58 is disposed at the same position in the circumferential direction as the tooth portion 34 on one circumferential side of the pair of circumferentially adjacent teeth portions 34 . Similarly, the plurality of press-fitting portions 58 on the other side in the circumferential direction of the first insulator fixing portion 52 are in contact with the teeth portions 34 on the other side in the circumferential direction among a pair of teeth portions 34 adjacent in the circumferential direction. placed in the same position. Further, as shown in FIGS. 4 and 5, when the first insulator fixing part 52 is fixed to the insulator 22, the caulking piece 54 is arranged at the center of the pair of circumferentially adjacent teeth parts 34. . Further, the base plate portion 62 of the caulking piece 54 is arranged between the coil ends 26A on one axial side of a pair of circumferentially adjacent coils 26.

Here, as shown in FIG. 4, the first terminal portion 50A includes a first portion 68 routed from the radially outer end of the coil end 26A on one axial side to the other side in the circumferential direction. There is. The first terminal portion 50A also includes a second portion 70 as a connection portion that is wired from the other side in the circumferential direction of the first portion 68 toward the inside in the radial direction (the side opposite to the annular portion 32 of the stator core 20). We are prepared. Here, a slack portion 72 bent in an L shape from the first portion 68 to the second portion 70 is formed at the boundary portion between the first portion 68 and the second portion 70 in the first terminal portion 50A. ing. The second portion 70 of the first terminal portion 50A described above is connected to the caulking portion 66 of the first terminal 28.

As shown in FIGS. 4 and 5, when the second portion 70 of the first terminal portion 50A is connected to the caulking portion 66 of the first terminal 28, the second portion 70 of the first terminal portion 50A is The caulking piece 54 is arranged along one surface of the substrate portion 62 in the axial direction. Further, the first portion 68, the second portion 70, and the slack portion 72 of the first terminal portion 50A are arranged between the coil ends 26A on one axial side of the pair of circumferentially adjacent coils 26.

As shown in FIGS. 8 and 9, the second terminal 30, like the first terminal 28, is formed by pressing a copper plate, which is a conductive member. The second terminal 30 includes a second insulator fixing part 74 as an insulator fixing part formed in a plate shape extending in the circumferential direction with the radial direction as the thickness direction.

Here, the center portion in the circumferential direction of the second insulator fixing portion 74 is referred to as the center fixing portion 74A, and the portions on one side and the other side in the circumferential direction of the second insulator fixing portion 74 are referred to as the end side fixing portions 74B. Make it.

The central fixing portion 74A is similar to the first terminal 28, except that it does not include the plurality of press-fit fitting portions 58 and that the connecting piece portions 76 extend from both sides in the circumferential direction on one side in the axial direction. It is configured similarly to the first insulator fixing part 52 (see FIG. 6).

The end fixing part 74B on one side in the circumferential direction is the first insulator of the first terminal 28, except that the connecting piece part 76 extends from the end on one side in the axial direction and the other side in the circumferential direction. It is configured similarly to the fixing part 52 (see FIG. 6). The connecting piece portion 76 of the end fixing portion 74B on one side in the circumferential direction is connected to the connecting piece portion 76 on the one side in the circumferential direction of the central fixing portion 74A.

The end fixing part 74B on the other side in the circumferential direction is the first insulator of the first terminal 28, except that the connecting piece part 76 extends from the end on the one side in the axial direction and the one side in the circumferential direction. It is configured similarly to the fixing part 52 (see FIG. 6). The connecting piece portion 76 of the end fixing portion 74B on the other side in the circumferential direction is connected to the connecting piece portion 76 on the other side in the circumferential direction of the central fixing portion 74A.

Note that the portions of the central fixing portion 74A and the end fixing portions 74B that correspond to the first insulator fixing portion 52 of the first terminal 28 are given the same reference numerals as the first insulator fixing portion 52.

Further, the second terminal 30 is arranged radially inward from the other end in the axial direction of the central fixing part 74A, the end fixing part 74B on one side in the circumferential direction, and the end fixing part 74B on the other side in the circumferential direction. It is provided with three caulking pieces 54 each extending. The three caulking pieces 54 are arranged at equal intervals along the circumferential direction. Here, the three caulking pieces 54 of the second terminal 30 have the same configuration as the caulking pieces 54 of the first terminal 28. Note that the caulking piece 54 of the second terminal 30 will be given the same reference numeral as the caulking piece 54 of the first terminal 28. As shown in FIG. 3, the second terminal portion 50B is held between the caulking portions 66 of the caulking piece 54, so that the second terminal portion 50B is connected to the caulking portion 66 of the caulking piece 54. It has become.

As shown in FIGS. 3 and 9, the second insulator fixing portion 74 of the second terminal 30 described above is inserted into the second terminal fitting portion 48 of the insulator 22. As shown in FIGS. Here, as shown in FIG. 9, in the circumferential center of the bottom of the second terminal fitting part 48, a central fitting recess 48A into which the other axial end of the central fixing part 74A is inserted. is formed. Further, on one circumferential side of the bottom of the second terminal fitting part 48, an end-side fitting recess 48B into which the other axial end of the end-side fixing part 74B on one side in the circumferential direction is inserted. is formed. Further, on the other side in the circumferential direction at the bottom of the second terminal fitting part 48, an end-side fitting recess 48B into which the other end in the axial direction of the end-side fixing part 74B on the other side in the circumferential direction is inserted. is formed. When the second insulator fixing part 74 of the second terminal 30 is inserted into the second terminal fitting part 48 of the insulator 22, the other axial end of the central fixing part 74A is inside the central fitting recess 48A. will be placed in Further, the ends on the other axial side of the end fixing portions 74B on one side in the circumferential direction and the other side in the circumferential direction are arranged in the respective end side fitting recesses 48B. Thereby, the second insulator fixing part 74 is fixed to the insulator 22, and the second terminal 30 is supported by the insulator 22. Further, in a state in which the other end in the axial direction of the end fixing portions 74B on one side and the other side in the circumferential direction are arranged in the respective end side fitting recesses 48B, the plurality of press-fit fitting portions 58 It is press-fitted into the inner wall of the end-side fitting recess 48B. Thereby, the state in which the second insulator fixing part 74 is fixed to the insulator 22 is maintained. Note that, like the plurality of press-fitting parts 58 of the first terminal 28, the plurality of press-fitting parts 58 are arranged at the same position in the circumferential direction as the predetermined teeth part 34. Further, as shown in FIG. 3, the three caulking pieces 54 of the second terminal 30 are respectively arranged at the center of a pair of teeth portions 34 adjacent to each other in the circumferential direction.

Here, as shown in FIG. 3, the second terminal section 50B has the same configuration as the first terminal section 50A. Note that portions of the second terminal section 50B that correspond to the first terminal section 50A are given the same reference numerals as those of the first terminal section 50A. The second portion 70 of the second terminal portion 50B of each phase is connected to the three caulking portions 66 of the second terminal 30, respectively.

Next, a configuration for suppressing wear of the portion of the winding 24 that is drawn out from the coil 26 will be described.

FIG. 10 shows a portion of the stator 14 where the second terminal 30 is provided. Here, among the coils 26 of each phase, numbers will be given in order from the coil 26 disposed closest to the second terminal 30 to one side in the circumferential direction.

Specifically, the number of the coil 26 disposed closest to the second terminal 30 among the U-phase coils 26 is U1. Further, the number U2 is the number of the U-phase coil 26 disposed on one side in the circumferential direction with respect to the coil 26 with number U1, and the U-phase coil 26 disposed on one side in the circumferential direction with respect to the coil 26 with number U2. The number of the U-phase coil 26 disposed on one side in the circumferential direction with respect to the coil 26 with the number U3 is U4, and the number of the U-phase coil 26 disposed on one side in the circumferential direction with respect to the coil 26 with the number U4 is U4. Let the number of the phase coil 26 be U5. Similarly, the numbers of the five V-phase coils 26 are V1 to V5, and the numbers of the five W-phase coils 26 are W1 to W5.

Further, each tooth portion 34 of the stator core 20 will also be numbered. Specifically, the number of the tooth portion 34 around which the coil 26 with the number U1 is formed is designated as U1, the number of the tooth portion 34 around which the coil 26 with the number V1 is formed is designated as V1, and the number of the tooth portion 34 with the number W1 is designated as V1. The number of the teeth portion 34 around which the coil 26 is formed is designated as W1. Similarly, the remaining teeth portions 34 are numbered U2 to U5, V2 to V5, and W2 to W5.

In addition, when the coil 26 of a specific number is shown in the following description, the number of the said coil 26 may be attached in parenthesis at the end of the code|symbol 26 which shows the said coil 26. Further, in the following description, when a specific number of the tooth portion 34 is indicated, the number of the tooth portion 34 may be added in parentheses at the end of the reference numeral 34 indicating the tooth portion 34.

As shown in FIGS. 10 and 11, a part of the winding 24 forming the coil 26 (U1) becomes a first lead wire 78 and a second lead wire 80 drawn out from the coil 26 (U1). ing. The first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (U1) are drawn out from between a pair of circumferentially adjacent teeth portions 34 (U1) and teeth portions 34 (V1). Note that the first leader line 78 indicated by a solid line in FIG. 11 indicates the first leader line 78 drawn out to one side in the axial direction, and the first leader line 78 indicated by a broken line in FIG. shows the first lead line 78 routed along a predetermined route.

The first lead wire 78 drawn out from the coil 26 (U1) is the aforementioned second terminal portion 50B. The second portion 70 of the second terminal portion 50B is arranged between the pair of teeth portions 34 (W5) and teeth portions 34 (U1) (between the pair of coils 26 (W5) and coils 26 (U1)). The second terminal 30 is connected to the caulking portion 66 of the second terminal 30.

The second lead wire 80 drawn out from the coil 26 (U1) constitutes a portion connecting between the coil 26 (U1) and the coil 26 (U2). The second lead wire 80 includes an inclined portion 82 which is arranged so as to be inclined from the radially outer portion of the coil end 26A on one axial side toward the other side in the axial direction as it goes toward one side in the circumferential direction. . This inclined portion 82 is located inside the annular covering portion 36 of the insulator 22 in the radial direction between the coil 26 (U1) and the coil 26 (V1) (between the teeth portion 34 (U1) and the tooth portion 34 (V1)). The cables are routed along the plane of the

Further, as shown in FIG. 11, the second lead wire 80 connects an outer wiring portion 84 that is routed from the opposite end of the inclined portion 82 to the coil 26 (U1) toward one side in the circumferential direction. We are prepared. As shown in FIGS. 10 and 11, the outer wiring portion 84 is wired along the other axial end of the insulator 22 on the radially outer side with respect to the annular covering portion 36. As shown in FIGS. Note that the wiring route of the second lead wire 80 is not limited to the above, and other wiring routes such as wiring a portion corresponding to the outer wiring part 84 along one end of the insulator 22 in the axial direction are possible. It can also be used as a route.

As shown in FIG. 10, a portion of the winding 24 forming the coil 26(V1) is drawn out from the coil 26(V1), as is a portion of the winding 24 forming the coil 26(U1). A first lead line 78 and a second lead line 80 are formed. The first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (V1) are drawn out from between a pair of circumferentially adjacent teeth portions 34 (V1) and teeth portions 34 (W1).

The first lead wire 78 drawn out from the coil 26 (V1) is the aforementioned second terminal portion 50B. The second portion 70 of the second terminal portion 50B is arranged between the pair of teeth portions 34 (U1) and teeth portions 34 (V1) (between the pair of coils 26 (U1) and coils 26 (V1)). The second terminal 30 is connected to the caulking portion 66 of the second terminal 30.

The second lead wire 80 drawn out from the coil 26 (V1) constitutes a portion connecting between the coil 26 (V1) and the coil 26 (V2). This second lead wire 80 is provided with an inclined portion 82 and the like like the second lead wire 80 drawn out from the coil 26 (U1). The inclined portion 82 of the second lead wire 80 drawn out from the coil 26 (V1) is located between the coils 26 (V1) and the coils 26 (W1) (between the teeth portions 34 (V1) and the teeth portions 34 (W1). The cables are routed along the radially inner surface of the annular covering portion 36 of the insulator 22 at the inner surface of the annular covering portion 36 of the insulator 22.

A part of the winding 24 that forms the coil 26 (W1) is similar to a part of the winding 24 that forms the coil 26 (U1), as well as the first lead wire 78 and the first lead wire drawn out from the coil 26 (W1). There are two lead lines 80. The first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (W1) are drawn out from between a pair of circumferentially adjacent teeth portions 34 (W1) and teeth portions 34 (U2).

The first lead wire 78 drawn out from the coil 26 (W1) is the aforementioned second terminal portion 50B. The second portion 70 of the second terminal portion 50B is arranged between the pair of teeth portions 34 (V1) and teeth portions 34 (W1) (between the pair of coils 26 (V1) and coils 26 (W1)). The second terminal 30 is connected to the caulking portion 66 of the second terminal 30.

The second lead wire 80 drawn out from the coil 26 (W1) constitutes a portion connecting between the coil 26 (W1) and the coil 26 (W2). This second lead wire 80 is provided with an inclined portion 82 and the like like the second lead wire 80 drawn out from the coil 26 (U1). The inclined portion 82 of the second lead wire 80 drawn out from the coil 26 (W1) is connected between the coil 26 (W1) and the coil 26 (U2) (between the teeth part 34 (W1) and the teeth part 34 (U2). The cables are routed along the radially inner surface of the annular covering portion 36 of the insulator 22 at the inner surface of the annular covering portion 36 of the insulator 22.

Although detailed description is omitted, a first lead wire 78 and a second lead wire 80 are also led out from the coil 26 (U5), the coil 26 (V5), and the coil 26 (W5). The first lead wire 78 and the second lead wire 80 drawn out from each of these coils 26 (U5, V5, W5) are the same as the first lead wire 78 and the second lead wire 80 drawn out from the aforementioned coil 26 (U1, V1, W1). It corresponds to the second leader line 80. The first terminal portions 50A, which are the first lead wires 78 drawn out from each of these coils 26 (U5, V5, W5), are connected to the caulking portions 66 of each of the first terminals 28, respectively. Further, the inclined portion 82, which is a part of the second lead wire 80 drawn out from each of the coils 26 (U5, V5, W5), is located between the coil 26 (U5) and the coil 26 (V5). (V5) and the coil 26 (W5) and between the coil 26 (W5) and the coil 26 (U1), respectively.

As shown in FIG. 10, the second terminal portion 50B, which is the first lead wire 78 drawn out from the coil 26 (U1), and the inclined portion 82 of the second lead wire 80 drawn out from the coil 26 (W5) are , are spaced apart in the axial direction between both coils 26 (U1, W5). Further, the second terminal portion 50B, which is the first lead wire 78 drawn out from the coil 26 (V1), and the inclined portion 82 of the second lead wire 80 drawn out from the coil 26 (U1) are different from each other in both coils 26 (V1). , U1) are spaced apart in the axial direction. Further, the second terminal portion 50B, which is the first lead wire 78 drawn out from the coil 26 (W1), and the inclined portion 82 of the second lead wire 80 drawn out from the coil 26 (V1) are different from both coils 26 (W1). , V1) are spaced apart in the axial direction. Although detailed explanation is omitted, the first lead wire 78 drawn out from the coil 26 (U5, V5, W5) is similar to the first lead wire 78 drawn out from the coil 26 (U1, V1, W1). It is spaced apart in the axial direction from the inclined portion 82 of the second leader line 80 disposed at a predetermined position.

(Actions and effects of this embodiment)
Next, the operation and effects of this embodiment will be explained.

As shown in FIGS. 1 to 3, in the motor 10 of this embodiment, by switching the voltages applied to the three first terminals 28, the current flowing through the coils 26 of each phase is switched. This generates a rotating magnetic field around the stator 14, causing the rotor 12 to rotate.

Here, in this embodiment, as shown in FIGS. 2 to 5, the caulking portion 66 of the first terminal 28 and the caulking portion 66 of the second terminal 30 are connected to a pair of teeth portions 34 (coils) adjacent to each other in the circumferential direction. 26). As a result, in this embodiment, the caulking portion 66 of the first terminal 28 and the caulking portion 66 of the second terminal 30 are arranged on one side or the other side in the axial direction with respect to the stator core 20, compared to the configuration in which the caulking portion 66 of the first terminal 28 and the caulking portion 66 of the second terminal 30 are arranged on one side or the other side in the axial direction with respect to the stator core 20. It is possible to reduce the size in the axial direction.

In addition, in this embodiment, as shown in FIGS. 3, 4, 6, 7, 8, and 9, the first insulator fixing portion 52 of the first terminal 28 is connected to the first terminal fitting portion of the insulator 22. In the state inserted into the first terminal fitting part 44, the plurality of press-fitting parts 58 of the first insulator fixing part 52 are press-fitted into the inner wall of the first terminal fitting part 44. Thereby, it is possible to suppress the first terminal 28 from shifting relative to the insulator 22 due to the vibration of the motor 10. As a result, reliability against vibrations of the motor 10 can be ensured or improved. In particular, by providing a plurality of press-fit fitting portions 58 on both sides of the caulking piece 54 in the circumferential direction, vibration of the caulking piece 54 can be suppressed.

Further, in this embodiment, when the second insulator fixing part 74 of the second terminal 30 is inserted into the second terminal fitting part 48 of the insulator 22, the plurality of press-fitting parts 58 are inserted into the end-side fitting recess. It is press-fitted into the inner wall of 48B. Thereby, it is possible to suppress the second terminal 30 from shifting relative to the insulator 22 due to the vibration of the motor 10. As a result, reliability against vibrations of the motor 10 can be ensured or improved. In particular, in the second terminal 30 of this embodiment, the plurality of press-fitting parts 58 are provided in the end-side fixing part 74B, and the plurality of press-fitting parts 58 are not provided in the central fixing part 74A. As a result, vibrations at both circumferential ends of the second terminal 30 relative to the circumferential center can be effectively suppressed.

Further, in this embodiment, as shown in FIGS. 3, 4, and 5, in this embodiment, the first terminal portion 50A and the second terminal portion 50B of the coil 26 are connected to the first portion 68 and the second portion. 70 and a slack portion 72. Thereby, the tension generated in the first terminal portion 50A and the second terminal portion 50B can be alleviated by the slack portion 72. Thereby, stress generated at the connection portion between the coil 26 and the terminals (first terminal 28 and second terminal 30) can be alleviated. As a result, it is possible to suppress occurrence of disconnection in the first terminal portion 50A and the second terminal portion 50B of the coil 26.

In addition, in this embodiment, as shown in FIGS. 3 to 5, the second portion 70 of the first terminal portion 50A and the second terminal portion 50B is a surface of the substrate portion 62 of the caulking piece 54 on one side in the axial direction. is located along. Thereby, when the motor 10 vibrates in the axial direction, displacement of the second portion 70 toward the other side in the axial direction can be suppressed by the base plate portion 62 of the caulking piece 54 . Thereby, torsional deformation of the first portion 68 due to displacement of the second portion 70 in the axial direction can be suppressed.

Further, in the present embodiment, the first portion 68, the second portion 70, and the slack portion 72 of the first terminal portion 50A and the second terminal portion 50B are the coils on one side in the axial direction of the pair of circumferentially adjacent coils 26. It is arranged between the ends 26A. As a result, compared to a configuration in which the first portion 68, second portion 70, and slack portion 72 of the first terminal portion 50A and the second terminal portion 50B are arranged apart from the above positions, the first terminal portion 50A and the second terminal portion 50B are It is possible to suppress the length of the terminal portion 50B from increasing.

Furthermore, in this embodiment, as shown in FIGS. 10 and 11, the first lead wire 78 and the second lead wire 80 are drawn out from the coil 26 (U1). Further, the first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (U1) are wired in opposite directions in the circumferential direction. This prevents the first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (U1) from coming into contact with each other. Thereby, it is possible to prevent or suppress wear of the first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (U1) due to contact with each other. Note that the first lead wire 78 and the second lead wire 80 drawn out from each coil 26 (V1, W1, U5, V5, W5) are similarly connected to each coil 26 (V1, W1, U5, V5, It is possible to prevent or suppress abrasion of the first lead wire 78 and the second lead wire 80 drawn out from W5) due to contact with each other.

Further, in the present embodiment, the second portion 70 of the first leader line 78 (first terminal portion 50A, second terminal portion 50B) is extended while the first leader line 78 and second leader line 80 are drawn out. It is connected to a caulking portion 66 located at a position different from between the pair of teeth portions 34 adjacent to each other in the circumferential direction. With this configuration, it is possible to prevent or suppress wear of the first lead line 78 and the second lead line 80 drawn out from between a pair of teeth portions 34 adjacent to each other in the circumferential direction due to contact between the two. I can do it.

Further, in this embodiment, the U-phase coil 26, the V-phase coil 26, and the W-phase coil 26 are arranged in this order along the circumferential direction. In addition, a first lead wire 78 drawn out from a specific coil 26 of one phase and a second lead wire 80 drawn out from a specific coil 26 of another phase are connected to a specific coil 26 of one phase. 26 and the specific coil 26 of the other phase are spaced apart in the axial direction. With this configuration, it is possible to prevent or suppress wear of the first lead wire 78 and the second lead wire 80 drawn from the coils 26 of mutually different phases due to contact with each other.

In addition, in this embodiment, the first leader line 78 and the second leader line 80 drawn out from the coil 26 (U1, V1, W1) and the first leader line 78 drawn out from the coil 26 (U5, V5, W5) Although an example in which the wires and the second leader line 80 are similarly routed has been described, the present invention is not limited thereto. For example, as in the stator of the motor of the second embodiment shown in FIG. It may be set in the opposite direction to the form. Although not shown, in the motor of the second embodiment, the wiring directions of the first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (V5, W5) are also the same as in the first embodiment. are set in the opposite direction.

Further, in the example described above, the first lead wire 78 drawn out from the coil 26 (U1, V1, W1, U5, V5, W5) is connected to the coil 26 (U1, V1, W1, U5, V5, W5). Although an example has been described in which the caulking portions 66 are respectively connected to adjacent positions, the present invention is not limited thereto. For example, as in the stator of the motor of the third embodiment shown in FIG. It may also be connected to section 66. Although not shown, in the motor of the third embodiment, the first lead wires 78 drawn out from the coils 26 (V1, W1, U5, V5, W5) are connected to the coils 26 (V1, W1, U5, V5). , W5) and the caulking portions 66 located at separate positions.

Furthermore, in the example described above, the first lead wire 78 and the second lead wire 80 drawn out from a specific coil 26 are wired in opposite directions in the circumferential direction. The invention is not limited to this. For example, the motor may be configured like the motor of the fourth embodiment below.

As shown in FIGS. 14 and 15, in the motor of the fourth embodiment, the first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (U1) are arranged in the same circumferential direction. It is routed to one side.

The first lead wire 78 drawn out from the coil 26 (U1) is arranged so as to be inclined toward one side in the axial direction as it goes from the radially outer portion of the coil end 26A on the other axial side toward one side in the circumferential direction. The first portion 68 has a first portion 68 , and the second portion 70 is routed radially inward from the first portion 68 . The second portion 70 of the first lead wire 78 is arranged between the pair of teeth portions 34 (U1) and teeth portions 34 (V1) (between the pair of coils 26 (U1) and coils 26 (V1)). It is connected to the caulking part 66.

The second lead wire 80 drawn out from the coil 26 (U1) is arranged so as to be inclined toward the other side in the axial direction as it goes from the radially outer portion of the coil end 26A on one axial side toward the one side in the circumferential direction. It has a sloped portion 82. This inclined portion 82 is arranged so as to intersect with the first portion 68 of the first lead wire 78 drawn out from the coil 26 (U1) when viewed from the inside in the radial direction. In this embodiment, this inclined portion 82 is located radially inward with respect to the first portion 68 of the first lead wire 78 drawn out from the coil 26 (U1).

As shown in FIG. 15 , the insulator 22 includes a lead wire contacting portion 86 that projects from the annular covering portion 36 radially inward and toward the inclined portion 82 of the second lead wire 80 . The inclined portion 82 of the second leader line 80 is in contact with this leader line contact portion 86 . As a result, the inclined portion 82 of the second leader line 80 and the first portion 68 of the first leader line 78 are maintained apart from each other. As a result, it is possible to prevent or suppress wear of the first leader line 78 and the second leader line 80 due to contact between the two. Note that the first lead wire 78 and the second lead wire 80 drawn out from the other coils 26 have the same configuration as the first lead wire 78 and the second lead wire 80 drawn out from the coil 26 (U1). .

In the motor of the fourth embodiment described above, an example has been described in which the leader wire contact portion 86 is brought into contact with the second leader wire 80, but the present invention is not limited to this. Depending on the positional relationship between the first leader line 78 and the second leader line 80, a configuration may be adopted in which the leader line contact portion 86 is brought into contact with the first leader line 78. Further, depending on the positional relationship between the first lead line 78 and the second lead line 80, a plurality of lead line contact portions 86 may be configured to contact the first lead line 78 and the second lead line 80, respectively.

Although one embodiment of the present disclosure has been described above, the present disclosure is not limited to the above, and can be implemented with various modifications other than the above without departing from the spirit thereof. Of course.

10 Motor (rotating electric machine), 12 Rotor (rotor), 14 Stator (armature, stator), 18 Magnet, 20 Stator core (armature core), 22 Insulator, 24 Winding, 26 Coil, 28 First terminal ( Terminal), 30 Second terminal (terminal), 32 Annular part, 34 Teeth part, 66 Caulking part (locking part), 70 Second part (connecting part), 78 First leader line, 80 Second leader line, 86 Lead wire contact part

Claims (5)

An armature having an annular portion (32) formed in an annular shape, and a plurality of teeth portions (34) protruding from the annular portion toward one side in the radial direction and arranged at intervals in the circumferential direction. Core (20) and
a plurality of coils (26) formed by winding conductive windings (24) around the plurality of teeth portions, respectively;
terminals (28, 30) formed using a conductive member and having a locking part (66) disposed between a pair of circumferentially adjacent teeth parts;
A connection part that is formed by a part of the winding that forms a specific coil among the plurality of coils, is routed from the specific coil toward the locking part, and is connected to the locking part. (70), a first leader line (78) having a
A first wire is formed by a part of the winding that forms the specific coil, is routed from the specific coil to the side opposite to the first lead-out wire, and connects with the other coils. 2 leader line (80),
armature (14). The first leader line and the second leader line are drawn out from between the pair of circumferentially adjacent teeth parts,
The connection portion of the first lead-out line is connected to the locking portion located at a different position from between the pair of teeth parts from which the first lead-out line and the second lead-out line are drawn out. The armature according to claim 1. comprising the plurality of coils of a plurality of phases;
The specific coil of one phase is provided on one side in the circumferential direction with respect to the locking portion,
The specific coil of another phase is provided on the other side in the circumferential direction with respect to the locking portion,
The connection portion of the first lead wire drawn out from the specific coil of one phase is connected to the locking portion disposed between the specific coil of one phase and the specific coil of another phase. is latched to the
The first lead wire drawn out from the specific coil of one phase and the second lead wire drawn out from the specific coil of another phase are connected to the specific coil of one phase and the other phase. The armature according to claim 2, wherein the armature is axially spaced apart from the specific coil. An armature having an annular portion (32) formed in an annular shape, and a plurality of teeth portions (34) protruding from the annular portion toward one side in the radial direction and arranged at intervals in the circumferential direction. Core (20) and
a plurality of coils (26) formed by respectively winding conductive windings around the plurality of teeth;
terminals (28, 30) formed using a conductive member and having a locking part (66) disposed between a pair of circumferentially adjacent teeth parts;
A connection part that is formed by a part of the winding that forms a specific coil among the plurality of coils, is routed from the specific coil toward the locking part, and is connected to the locking part. (70), a first leader line (78) having a
a second lead wire that is formed by a part of the winding that forms the specific coil, is routed from the specific coil to the first lead wire side, and connects with the other coils; (80) and
It is formed using an insulating member and is attached to the armature core, and at least one of the first leader wire and the second leader wire comes into contact with each other, so that the first leader wire and the second leader wire are connected to each other. an insulator (22) having a lead wire contact portion (86) that maintains a state of separation between the two;
armature (14). One of a stator (14) and a rotor (12) configured to include the armature according to any one of claims 1 to 4;
the other of a stator and a rotor having a magnet (18) disposed radially opposite to the armature;
A rotating electric machine (10) comprising: